#include <stdio.h>

#define ADJUST 7.31 // 字符常量

int main(void)
{
    printf("\n");

    const double SCALE = 0.333; // const变量

    double shoe, foot;

    shoe = 9.0;

    foot = SCALE * shoe + ADJUST;

    printf("Shoe size (men's) foot length\n");
    
    printf("%10.1f %15.2f inches\n", shoe, foot);

    return 0;
}